🚀 go-pugleaf

IS LENGTH CONTRACTION GEOMETRICAL OR PHYSICAL?

RP <no_mail_no_s...@yahoo.com> wrote:
> Gerald L. O'Barr" <glob...@yahoo.com> wrote:
>> Pentcho Valev <pva...@yahoo.com> wrote:
>>> Don Stockbauer <donstockba...@hotmail.com> wrote:
>>> >Pentcho Valev <pva...@yahoo.com> wrote:
>>> >>Tom Roberts <tjroberts...@sbcglobal.net> wrote:
>>> >>>   In SR, neither "length contraction" nor
>>> >>> "time dilation" are physical--they are purely
>>> >>> geometrical.  A moving ruler does
>>> >>> not physically get any shorter, it is merely
>>> >>> MEASURED shorter by an observer relative to
>>> >>> whom it is moving along its length.
>>> >>> Ditto for clock tick-rates.

O'Barr comments:
>> On The Measurements of Lengths!
>>
>>    I, of course, accept LET as the best science we
>> now have.  It is not perfect, but it is certainly
>> more perfect than SR.  And LET explains that there
>> is one
>> frame in which the actual lengths of rulers are
>> controlled or affected, and in which the rates of
>> clocks are controlled or affected.  This one frame
>> causes all clocks to slow down with their absolute
>> velocity, and it causes all rulers to shorten with
>> their absolute velocities, at least in the
>> direction of their motions.  . . .

>>  . . .

>> Gerald L. O'Barr    <globarr...@yahoo.com>
>>                     (globarr)

RP <no_mail_no_s...@yahoo.com> wrote:
> That premise doesn't correspond to the lorentz
> transform.


O'Barr comments:
   I sometimes ignore off the cuff comments such as
this.   You did not state or give a reason for your
position.  You gave no math or any example of how you
were right.  But in truth, when Lorentz derived these
relationships, which he did before Einstein came
along, these were the only physical facts that he
had to assumed, along with the constant speed of
light and by taking the right syncs of clocks.  These
simple assumptions allowed the Lorentz transforms to
become valid for all frames.
    If you do not understand this, do not give up.
Keep asking questions, and they will all be answered.


Gerald L. O'Barr    <globarr...@yahoo.com>
                    (globarr)